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2 years ago

If

Physics

1 answer:

Aleksandr-060686 [28]2 years ago

3 0

Answer:

A factor of 2*4 = 8

Explanation:

F_g = (G*m1*m2)/r^2

where m1 and m2 are the two masses, G is Newton's gravitational constant, and r is the distance between the center of mass of the two objects.

So, if you double m1 and quadruple m2:

m1' = 2*m1

m2' = 4*m2

Then F_g' = (G*m1'*m2')/r^2 = (G*2*m1*4*m2)/r^2 = 8*(G*m1*m2)/r^2 = 8*F_g

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Determine the linear velocity of an object with an angular velocity of 5.9 radians per second at a distance of 12 centimeters fr

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Linear velocity = angular velocity (radius)
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3 years ago

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Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the first 3.8 s after the eleva

Delicious77 [7]

Answer:

v= 4.0 m/s

Explanation:

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Normal force, can adopt any value needed to match the acceleration of the mass, according to Newton's 2nd Law.
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$F_{g} = m*g = 95 kg * 9.8 m/s2 = 930 N (1)$

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As the gravity is larger than normal force, this means that the acceleration is downward, so, we choose this direction as the positive.

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As the elevator was moving, the only choice is that it is moving at a constant speed, the same that it had when the scale was read for the first time, i.e., 4 m/s downward.

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3 years ago

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